Youtube got hacked on 26th of December, most of this 'thumb nails' which are little pictures that show a part of the movie got changed in to this person named 'Damo Suzuki'. A hacker changed the thumb nails into his picture. And therefor people are calling Damo Suzuki the '' Thumb nail guy ''

Lolguy: Hey did you see all those thumb nails on Youtube?
Lolguy2: Oh do you mean the thumb nail guy?